So, what should you look for in a set of strings? There's no one answer. To go back to those same analogies: every woodwind player has a preferred strength and shape of reed, and every drummer likes a set of sticks with particular balance and tip shape. It's the same with strings: you've got different gauges and different materials to choose from, and ultimately the right ones for you are a matter of preference.
Guitars have been played since the Renaissance era, after descending from the ancient Greek instrument, the kithara. Or, at least, that's how the theory goes: the only real proof for this is the similarities between the Greek word and the Spanish word, quitarra. Early guitars often had four strings, evolving into the six-string version we know today in the late 1600s. Anton Stradivari, the famous violin-maker, also had a hand in making guitars. There's now only one Stradivarius guitar left in existence.